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5+2x=6x-5
10=6x-2x
10=4x
10/4=x
x=2,5
5 - 2x + 4x = - x + 7x - 5
5 + 2x = 6x - 5
2x - 6x = - 5 - 5
- 4x = - 10
x = - 10/-4
x = 5/2
Respuesta.
x = 5/2